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Sorting parts of array separately in JavaScript
We have an array that contains many objects. We are required to write a function to sort the first half of the array in ascending order.
And the second half of the array with ascending order to but without inter mixing the entries of halves into one another.
Consider this sample array −
const arr = [
{id:1, x: 33},
{id:2, x: 22},
{id:3, x: 11},
{id:4, x: 3},
{id:5, x: 2},
{id:6, x: 1}
];Our function should sort this array on the basis of the 'x' property of the objects keeping the things mentioned above in mind.
Example
The code for this will be −
const arr = [
{id:1, x: 33},
{id:2, x: 22},
{id:3, x: 11},
{id:4, x: 3},
{id:5, x: 2},
{id:6, x: 1}
];
const sortInParts = array => {
const arr = array.slice();
const sorter = (a, b) => {
return a['x'] - b['x'];
};
const arr1 = arr.splice(0, arr.length / 2);
arr.sort(sorter);
arr1.sort(sorter);
return [...arr1, ...arr];
};
console.log(sortInParts(arr));Output
And the output in the console will be −
[
{ id: 3, x: 11 },
{ id: 2, x: 22 },
{ id: 1, x: 33 },
{ id: 6, x: 1 },
{ id: 5, x: 2 },
{ id: 4, x: 3 }
]
Updated on: 21-Nov-2020
129 Views
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